Explicitly Teach 

ProSocial Skills

Knafo, Weiner, and Dubrovsy (2009) describe prosocial behaviors as follows:

Prosocial behaviors are voluntary behaviors made with the intention of benefiting others (Eisenberg & Fabes, 1998). This definition carefully circumvents the potential benefits to the person performing the prosocial behavior. Prosocial behavior is often accompanied with psychological and social rewards for its performer. In the long run, individuals can benefit from living in a society where prosociality is common (which, in evolutionary terms, increases reproductive potential). It has therefore been difficult for researchers to identify purely altruistic behaviors, benefiting only the recipient and not the performer. Nevertheless, behaviors benefiting others, but whose main goal is self-advantageous (e.g. cooperative behaviors intended to obtain a common resource), typically are not considered prosocial. Typical examples include: volunteering; sharing toys, treats, or food with friends; instrumental help (e.g., helping a peer with school assignments); costly help (e.g. risking one's own life to save others); and emotionally supporting others in distress (e.g., comforting a peer following a disappointing experience or caring for a person who is ill).